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The definition of an upthrust is an upward movement, particularly of the Earth's crust.
An example of an upthrust is a piece of land being shifted upward after an earthquake.
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
- an upward push or thrust
- Geol. an upheaval of a part of the earth's crust
Used by arrangement with John Wiley & Sons, Inc.
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
An upward thrust, especially of part of the earth's crust.tr. & intr.v. up·thrust·ed
To thrust or be thrusted upward. Used especially of the earth's crust.